12017028 has 24 divisors (see below), whose sum is σ = 29689632. Its totient is φ = 3769984.

The previous prime is 12017021. The next prime is 12017051. The reversal of 12017028 is 82071021.

It is a junction number, because it is equal to n+sod(n) for n = 12016995 and 12017013.

It is not an unprimeable number, because it can be changed into a prime (12017021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29250 + ... + 29657.

It is an arithmetic number, because the mean of its divisors is an integer number (1237068).

Almost surely, 2^12017028 is an apocalyptic number.

It is an amenable number.

12017028 is an abundant number, since it is smaller than the sum of its proper divisors (17672604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12017028 is a wasteful number, since it uses less digits than its factorization.

12017028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58931 (or 58929 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12017028 is about 3466.5585239543. The cubic root of 12017028 is about 229.0510872972.

Adding to 12017028 its reverse (82071021), we get a palindrome (94088049).

The spelling of 12017028 in words is "twelve million, seventeen thousand, twenty-eight".